Commitments and Contingencies (Details)		6 Months Ended
	Jan. 27, 2024 incident fatality	Mar. 31, 2024 MMcf
National Transportation Safety Board
Long-term Purchase Commitment [Line Items]
Number of fatalities under investigation | fatality	1
National Transportation Safety Board | Jackson, Mississippi
Long-term Purchase Commitment [Line Items]
Number of incidents investigated that occurred during period | incident	2
Supply Commitment
Long-term Purchase Commitment [Line Items]
Contract term		1 year
Supply Commitment | Short-term Contract with Customer
Long-term Purchase Commitment [Line Items]
Contract term		1 year
Purchase commitment volume		82,200
Supply Commitment | Long-term Contract with Customer Within Two To Three Years
Long-term Purchase Commitment [Line Items]
Purchase commitment volume		30,000.0
Supply Commitment | Long-term Contract with Customer Within Two To Three Years | Minimum
Long-term Purchase Commitment [Line Items]
Contract term		2 years
Supply Commitment | Long-term Contract with Customer Within Two To Three Years | Maximum
Long-term Purchase Commitment [Line Items]
Contract term		3 years